BMC/Intel-BMC/linux.git/arch/nds32/kernel/dma.c, branch dev-5.2

nds32: use generic dma_noncoherent_ops

2018-05-29T14:10:32+00:00

Switch to the generic noncoherent direct mapping implementation. Signed-off-by: Christoph Hellwig Acked-by: Greentime Hu Tested-by: Greentime Hu

nds32: implement the unmap_sg DMA operation

2018-05-29T14:10:27+00:00

This matches the implementation of the more commonly used unmap_single routines and the sync_sg_for_cpu method which should provide equivalent cache maintainance. Signed-off-by: Christoph Hellwig Acked-by: Greentime Hu Tested-by: Greentime Hu

nds32: consolidate DMA cache maintainance routines

2018-05-29T14:10:13+00:00

Make sure all other DMA methods call nds32_dma_sync_single_for_{device,cpu} to perform cache maintaince, and remove the consisteny_sync helper that implemented both with entirely separate code based off an argument. Also make sure these helpers handled highmem properly, for which code is copy and pasted from mips. Signed-off-by: Christoph Hellwig Acked-by: Greentime Hu Tested-by: Greentime Hu

nds32: DMA mapping API

2018-02-22T02:44:32+00:00

This patch adds support for the DMA mapping API. It uses dma_map_ops for flexibility. Signed-off-by: Vincent Chen Signed-off-by: Greentime Hu Acked-by: Arnd Bergmann